GPIOIEV
gpioiev = readb(pl061->base + GPIOIEV);
writeb(gpioiev, pl061->base + GPIOIEV);
pl061->csave_regs.gpio_iev = readb(pl061->base + GPIOIEV);
writeb(pl061->csave_regs.gpio_iev, pl061->base + GPIOIEV);
polarity |= readl_relaxed(base + GPIOIEV) & ~mask;
writel_relaxed(polarity, base + GPIOIEV);